Hi all,I am interested if there are currently any plans to add some form of precision tracking for variables, be it through sympy or mpmath. The current implementation will more than happily compute sin(0.50) to 100+ decimal places if asked, even though the argument is only accurate to two decimal places.
In Mathematica this feature is implemented as follows: In: N[Sin[SetPrecision[0.50, 2]], 100] Out: 0.48Notice how even though the sine of 0.5 was requested to 100 places of accuracy it was only given to two as that is the maximum allowed by the input. Naturally combing of numbers of various precisions is also handled automatically.
Something like this would be very useful for Sympy and would make scientific calculations a lot easier.
Regards, Freddie.
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